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Image processing device and image processing method

An image processing and image technology, applied in color signal processing circuits, image communication, television and other directions, can solve the problems of chroma error, can not really solve the problem of cross color, etc., to achieve the effect of image quality improvement

Inactive Publication Date: 2012-12-12
MSTAR SOFTWARE R&D (SHENZHEN) LTD +1
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the above-mentioned method for solving the cross-color phenomenon is only applicable to still images. When objects with high-frequency luminance spaces are moving in the image frame, the above-mentioned method cannot really solve the cross-color problem, especially for the boundary of the moving object. And it may make the chroma have a greater error

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  • Image processing device and image processing method
  • Image processing device and image processing method

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Embodiment Construction

[0025] Please refer to FIG. 2(a), FIG. 2(b), FIG. 2(a), and FIG. 2(b) are schematic diagrams of an image processing device 200 according to a first embodiment of the present invention. As shown in Fig. 2(a) and Fig. 2(b), the image processing device 200 includes an image decoding unit 210, an image adjustment unit 220, a deinterlacing unit 230 and an image scaling unit 240, wherein the image adjustment unit 220 includes There is a pixel edge determination module 221, a pixel movement determination module 222, a saturation determination module 223, and a saturation adjustment module 224, wherein the saturation adjustment module 224 includes a first saturation adjustment module 225, a second saturation adjustment module module 226 and a third saturation adjustment module 227 . The image adjustment unit 220 is coupled to a storage unit 250 , wherein the storage unit 250 includes a plurality of weight comparison tables 252 , 254 , 256 . In addition, the image processing device 20...

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Abstract

The invention discloses an image processing device and an image processing method, which can realize the determination of the compensation of image chroma according to the movement degree of an image and improve image quality. The device comprises an image decoding unit and an image regulating unit, wherein the image decoding unit is used for decoding a stream of data so as to at least generate first image data; and the image regulating unit is used for determining an edge brightness parameter according to the brightness value of the pixel of the target position of the first image data and the brightness value of an adjacent pixel of the target position, determining an edge chroma parameter according to the initial chroma value of the pixel of the target position and the initial chroma value of the adjacent pixel of the target position, determining a weight number according to the edge brightness parameter and the edge chroma parameter and performing weight operation on a first presetchroma value and the initial chroma value of the pixel of the target position so as to determine a chroma value after regulating.

Description

technical field [0001] The present invention relates to an image processing device, in particular to an image processing device and an image processing method capable of adjusting the chroma of an image frame according to the edge of the image frame, the degree of movement or change, or the color saturation. Background technique [0002] In the current general TV system, the TV signal includes luminance and chroma signals, and when the TV receives the TV signal, it will use a filter to separate the luminance and chroma signals (Y / C separation). However, when figure 1 In the shown image frame 110 , when a part of the image has a spatially high frequency of luminance (a high frequency of luminance change), some signals cannot be accurately restored using a filter to restore luminance and chroma data. For example, the high-frequency portion of the luminance signal may be processed as chroma, causing rainbow-like colors to appear on the screen, which is the so-called cross colo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/64H04N7/26
Inventor 陈美如吴振禧李维国
Owner MSTAR SOFTWARE R&D (SHENZHEN) LTD